Cellulose ether is a cellulose derivative that the hydroxyl(-OH) of cellulose are partially or completely
substituted by ether groups.
HPMC (Hydroxypropyl Methyl Cellulose) has the polymeric backbone of cellulose, a natural carbohydrate
that contains a basic repeating structure of anhydroglucose units. During the manufacture of HPMC,
cellulose fibers which are heated with a caustic solution, are treated with methyl chloride and propylene
oxide in turn to form the fibrous reaction product, then its purified and ground to a fine, uniform powder to
gain final HPMC.
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